Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Two-piece rotary metal-cutting tool and method for interconnecting the pieces

a two-piece rotary and metal cutting technology, applied in the direction of cutting inserts, twist drills, manufacturing tools, etc., can solve the problems of poor torsion transfer ability, and inability to use known tools

Inactive Publication Date: 2008-05-06
SECO TOOLS AB
View PDF40 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a rotary metal-cutting tool that includes a tool body and a cutting portion attached to the tool body. The tool body has flutes on its outer surface for guiding chips during cutting, while the cutting portion has flutes on its outer surface to form cutting edges. The tool body and cutting portion are connected by a bayonet coupling formed by projections and recesses on the tool body and cutting portion. The cutting portion can be rotated to align the flutes and transfer the projections from the flutes into the recesses. The invention also includes a method for mounting the cutting portion to the tool body to form a metal-cutting rotary tool. The technical effects of the invention include improved chip guidance, reduced wear and tear, and improved efficiency in metal cutting.

Problems solved by technology

This technique however has practical limitations due to handling reasons when it comes to milling and drilling tools which rotate around a longitudinal axis.
The known tools however are impaired with drawbacks such as bad torsion transferring ability and troublesome mounting and dismounting.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-piece rotary metal-cutting tool and method for interconnecting the pieces
  • Two-piece rotary metal-cutting tool and method for interconnecting the pieces
  • Two-piece rotary metal-cutting tool and method for interconnecting the pieces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022]The embodiment of a tool 10 according to the invention shown in FIG. 1 is a so called helix drill, which comprises a cutting portion or drill tip 11 and a drill body 12. The drill has a rotational direction R.

[0023]The drill tip 11 is provided with at least one cutting edge 19 in the forward end thereof facing away from the drill body 12, which tip is given different designs depending on the area of application.

[0024]The drill tip 11 is made of hard material, preferably cemented carbide and most preferably of injection molded cemented carbide, and comprises a front cutting surface formed by two upper clearance faces 15, a lower support surface 16 as well as first and second curved surfaces 41, 18 interconnecting the surfaces 15 and 16. All these surfaces and associated edges are integrated as one piece with the drill tip and consequently formed of the same material, i.e. preferably injection molded cemented carbide. The curved surfaces 18 form front chip flutes for conducting ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
angleaaaaaaaaaa
angleaaaaaaaaaa
angleaaaaaaaaaa
Login to View More

Abstract

A tool includes a tool body and a cutting portion detachably mounted thereon, the tool being rotatable about a longitudinal center axis. The tool body includes flutes formed in an outer surface thereof, and a pair of forward projections at a front end thereof. The cutting portion includes front flutes formed in an external side thereof, and a pair of recesses extending circumferentially in communication with respective ones of the front flutes. To connect the cutting portion to the tool body, the cutting portion and tool body are converged longitudinally so that the projections enter the front flutes. Then, relative rotation is produced between the cutting portion and tool body to align the front flutes with the rear flutes while causing the projections to enter the recesses and form therewith a bayonet coupling.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS<?insert-end id="INS-S-00001" ?> [0001]This application is a reissue of U.S. Pat. No. 5,971,673, which is a continuation of application Ser. No. 08 / 929,462, filed Sep. 15, 1997<?insert-start id="INS-S-00003" date="20080506" ?>, now U.S. Pat. No. 5,988,953 which claims the benefit of priority to Swedish Application No. 9603325 filed Sep. 13, 1996<?insert-end id="INS-S-00003" ?>.BACKGROUND OF THE INVENTION[0002]The present invention relates to a tool for rotary, cutting machining, comprising a tool body and a cutting portion. The tool body has a front surface, and the cutting portion has a support surface provided to releaseably abut against the front surface in a substantially radial plane. The tool body and the cutting portion comprises means which cooperate for holding them together. The invention also relates to a cutting portion and a tool body as well as a method for mounting a cutting portion to a tool body.PRIOR ART[00...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): B23B51/00B23B51/02
CPCB23B51/02B23B2205/02B23B2250/12B23B2251/02B23B2251/14Y10T408/9098Y10T408/78Y10T408/907Y10T408/03Y10T408/89Y10T408/9097B23B2251/50B23B51/00
Inventor BERGLUND, MATTIASLUNDBERG, FREDRICKANG.RBRINK, INGELA
Owner SECO TOOLS AB
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com